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IONISATION DOUBLE Conclusion Nous avons présenté les sections efficaces intégrées de double ionisation calculées dans la région du seuil pour des excès d'´ energie variant de 0.1 ` a 7 eV. Par une technique de fit aux moindres carrés, nous avons montré que ces sections efficaces suivent bien la loi de seuil de Wannier. Nous avons obtenu des estimations, non seulement de l ,
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